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Signs of mold under silicone caulk include discoloration or dark spots appearing through or around the caulk, a musty odor in the area, and visible growth on the surface of the caulk. Additionally, if the caulk feels soft or spongy, it could indicate moisture trapped underneath, which is a breeding ground for mold.

To clean grout, you must know what your tile can handle. Ceramic and porcelain grout do well with acidic cleaners or a baking soda paste made with warm water, but stone floors require less aggressive cleaners meant for stone surfaces.

To clean the grout, apply the cleaner to a toothbrush, scrub the grout, and then wipe the entire area clean with a damp towel.

There are several products you can buy to soften caulk for removal. The most affordable are WD-40, alcohol, and vinegar. Industrial-grade isopropyl alcohol can be used for caulk that won’t budge, but you should hire a professional before using this solution. There are also a variety of products available at your local home improvement store that are made specifically for removing caulk.

There are many different ways to clean tile grout, but you may wonder—can you skip the scrubbing? If you have a big tiled space to clean, manually scrubbing each grout line could be a big job.

The answer is that it depends. Some methods listed in this guide might work for your grout without scrubbing. But usually, this will only apply if your grout is well-maintained and only needs a light cleaning.

For a scrub-free job, try steam cleaning, oxygen bleach, or the baking soda and vinegar methods.